conscious

1[not before noun]aware of something; noticing somethingconscious of somethingShe's very conscious of the problems involved.conscious of doing somethingHe became acutely conscious of having failed his parents.conscious that…I was vaguely conscious that I was being watched.oppositeunconscioussee alsoself-conscious

2able to use your senses and mental powers to understand what is happeningA patient who is not fully conscious should never be left alone.oppositeunconscious

3(of actions, feelings, etc.)deliberate or controlledto make a conscious decisionI made a conscious effort to get there on time.a conscious act of crueltyoppositeunconsciouscomparesubconscious

4being particularly interested in somethingenvironmentally consciousThey have become increasingly health-conscious.